linux-kernel - Re: [kvm-devel] [PATCH 3/8] SVM: add module parameter to disable NestedPaging

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Message-ID: <479B7A8F.8070308@qumranet.com>
Date:	Sat, 26 Jan 2008 20:23:11 +0200
From:	Avi Kivity <avi@...ranet.com>
To:	Joerg Roedel <joro@...tes.org>
CC:	"Nakajima, Jun" <jun.nakajima@...el.com>,
	kvm-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [kvm-devel] [PATCH 3/8] SVM: add module parameter to disable
 NestedPaging

Joerg Roedel wrote:
> Generally I see no problem with it. But at least for NPT I don't see a
> reason why someone should want to disable it on a VM basis (as far as it
> works stable). Avi, what do you think?
>   

Unless there is a real-life workload that benefits from npt=0, I see no 
reason to have per-vm npt control.  The module parameter is helpful, for 
to isolate npt problems and for development, but I don't see a need for 
users to fiddle with it.

-- 
Any sufficiently difficult bug is indistinguishable from a feature.

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